Transderm patches work...but you need a prescription.
1 litter bottle of Ginger Ale uncapped in the fridge for a couple days (takes fizz out). Ginger is the only substance that has been proven to naturally calm the stomach. Chew some pretzel rods and wash 'em down with the flat soda.
Never go below deck (unless she has to of course).
Good luck and bring a camera for memories.
Fin~S